Class

GtkFixedLayout

Description [src] 

final class Gtk.FixedLayout : Gtk.LayoutManager
{
  /* No available fields */
}

GtkFixedLayout is a layout manager which can place child widgets at fixed positions.

Most applications should never use this layout manager; fixed positioning and sizing requires constant recalculations on where children need to be positioned and sized. Other layout managers perform this kind of work internally so that application developers don’t need to do it. Specifically, widgets positioned in a fixed layout manager will need to take into account:

  • Themes, which may change widget sizes.

  • Fonts other than the one you used to write the app will of course change the size of widgets containing text; keep in mind that users may use a larger font because of difficulty reading the default, or they may be using a different OS that provides different fonts.

  • Translation of text into other languages changes its size. Also, display of non-English text will use a different font in many cases.

In addition, GtkFixedLayout does not pay attention to text direction and thus may produce unwanted results if your app is run under right-to-left languages such as Hebrew or Arabic. That is: normally GTK will order containers appropriately depending on the text direction, e.g. to put labels to the right of the thing they label when using an RTL language; GtkFixedLayout won’t be able to do that for you.

Finally, fixed positioning makes it kind of annoying to add/remove UI elements, since you have to reposition all the other elements. This is a long-term maintenance problem for your application.

Hierarchy

hierarchy this GtkFixedLayout ancestor_0 GtkLayoutManager ancestor_0--this ancestor_1 GObject ancestor_1--ancestor_0

Ancestors

Constructors

gtk_fixed_layout_new

Creates a new GtkFixedLayout.

Instance methods

Methods inherited from GtkLayoutManager (6)
gtk_layout_manager_allocate

Assigns the given width, height, and baseline to a widget, and computes the position and sizes of the children of the widget using the layout management policy of manager.

gtk_layout_manager_get_layout_child

Retrieves a GtkLayoutChild instance for the GtkLayoutManager, creating one if necessary.

gtk_layout_manager_get_request_mode

Retrieves the request mode of manager.

gtk_layout_manager_get_widget

Retrieves the GtkWidget using the given GtkLayoutManager.

gtk_layout_manager_layout_changed

Queues a resize on the GtkWidget using manager, if any.

gtk_layout_manager_measure

Measures the size of the widget using manager, for the given orientation and size.

Methods inherited from GObject (43)

Please see GObject for a full list of methods.

Signals

Signals inherited from GObject (1)
GObject::notify

The notify signal is emitted on an object when one of its properties has its value set through g_object_set_property(), g_object_set(), et al.

Class structure 

struct GtkFixedLayoutClass {
  GtkLayoutManagerClass parent_class;
  
}

No description available.

Class members
parent_class: GtkLayoutManagerClass

No description available.